6d6a65cf5c
It appears that people have been using token authentication to navigate to raw paths and recent changes have broken this. Whilst ideally these paths would not be being used like this - it was not the intention to be a breaking change. This PR restores access to these paths. Fix #13772 Signed-off-by: Andrew Thornton <art27@cantab.net>
125 lines
3.9 KiB
Go
125 lines
3.9 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package sso
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import (
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"net/http"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/web/middleware"
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gouuid "github.com/google/uuid"
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)
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// Ensure the struct implements the interface.
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var (
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_ SingleSignOn = &ReverseProxy{}
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)
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// ReverseProxy implements the SingleSignOn interface, but actually relies on
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// a reverse proxy for authentication of users.
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// On successful authentication the proxy is expected to populate the username in the
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// "setting.ReverseProxyAuthUser" header. Optionally it can also populate the email of the
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// user in the "setting.ReverseProxyAuthEmail" header.
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type ReverseProxy struct {
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}
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// getUserName extracts the username from the "setting.ReverseProxyAuthUser" header
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func (r *ReverseProxy) getUserName(req *http.Request) string {
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webAuthUser := strings.TrimSpace(req.Header.Get(setting.ReverseProxyAuthUser))
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if len(webAuthUser) == 0 {
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return ""
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}
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return webAuthUser
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}
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// Init does nothing as the ReverseProxy implementation does not need initialization
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func (r *ReverseProxy) Init() error {
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return nil
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}
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// Free does nothing as the ReverseProxy implementation does not have to release resources
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func (r *ReverseProxy) Free() error {
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return nil
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}
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// IsEnabled checks if EnableReverseProxyAuth setting is true
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func (r *ReverseProxy) IsEnabled() bool {
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return setting.Service.EnableReverseProxyAuth
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}
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// VerifyAuthData extracts the username from the "setting.ReverseProxyAuthUser" header
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// of the request and returns the corresponding user object for that name.
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// Verification of header data is not performed as it should have already been done by
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// the revese proxy.
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// If a username is available in the "setting.ReverseProxyAuthUser" header an existing
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// user object is returned (populated with username or email found in header).
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// Returns nil if header is empty.
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func (r *ReverseProxy) VerifyAuthData(req *http.Request, w http.ResponseWriter, store DataStore, sess SessionStore) *models.User {
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username := r.getUserName(req)
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if len(username) == 0 {
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return nil
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}
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log.Trace("ReverseProxy Authorization: Found username: %s", username)
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user, err := models.GetUserByName(username)
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if err != nil {
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if !models.IsErrUserNotExist(err) || !r.isAutoRegisterAllowed() {
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log.Error("GetUserByName: %v", err)
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return nil
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}
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user = r.newUser(req)
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}
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// Make sure requests to API paths, attachment downloads, git and LFS do not create a new session
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if !middleware.IsAPIPath(req) && !isAttachmentDownload(req) && !isGitRawOrLFSPath(req) {
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if sess.Get("uid").(int64) != user.ID {
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handleSignIn(w, req, sess, user)
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}
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}
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store.GetData()["IsReverseProxy"] = true
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log.Trace("ReverseProxy Authorization: Logged in user %-v", user)
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return user
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}
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// isAutoRegisterAllowed checks if EnableReverseProxyAutoRegister setting is true
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func (r *ReverseProxy) isAutoRegisterAllowed() bool {
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return setting.Service.EnableReverseProxyAutoRegister
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}
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// newUser creates a new user object for the purpose of automatic registration
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// and populates its name and email with the information present in request headers.
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func (r *ReverseProxy) newUser(req *http.Request) *models.User {
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username := r.getUserName(req)
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if len(username) == 0 {
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return nil
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}
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email := gouuid.New().String() + "@localhost"
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if setting.Service.EnableReverseProxyEmail {
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webAuthEmail := req.Header.Get(setting.ReverseProxyAuthEmail)
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if len(webAuthEmail) > 0 {
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email = webAuthEmail
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}
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}
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user := &models.User{
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Name: username,
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Email: email,
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IsActive: true,
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}
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if err := models.CreateUser(user); err != nil {
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// FIXME: should I create a system notice?
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log.Error("CreateUser: %v", err)
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return nil
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}
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return user
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}
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